Precalculus (6th Edition) Blitzer

Published by Pearson
ISBN 10: 0-13446-914-3
ISBN 13: 978-0-13446-914-0

Chapter 7 - Section 7.5 - Systems of Inequalities - Exercise Set - Page 865: 105

Answer

See the sample graphs below:
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Work Step by Step

Thus, the graphs obtained by using a graphing utility resemble the hand-drawn graphs. We thus verify the graphs drawn by hand in previous exercises.
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